1301 CONNECTICUT AVE NW
Office (large) · Washington · 20036
At a glance
1301 CONNECTICUT AVE NW in Washington, DC is listed on the Washington, DC property roll as “Office (large)”, SSL 01370825. The roll records a 2008 build year and an assessed value of $10,816,930. It last sold for $32,433,400 in Oct 2020. 6 active business locations at this address appear in public records.
The building's own benchmarking filing
Energy performance
From the building's own filing under its city's benchmarking ordinance. An ENERGY STAR score of 75 or above means the building outperforms three quarters of comparable buildings nationally. It is a self-reported figure, verified by the city only to the extent the ordinance requires.
Recorded transfers — county roll + state sale file
Sale history
| Recorded | Price | Qualification | Source | Instrument |
|---|---|---|---|---|
| Oct 2020 | $32,433,400 | not rated | County roll | — |
Prices are the consideration recorded in Washington, DC's public property records. Where a qualification code exists it is the assessor's judgement of whether a transfer was arm's length; transfers without one appear unrated rather than assumed clean. Whether a building is on the market today, and at what price, is not a public record and is not shown here — asking prices, listings and lease terms live in private commercial databases.
Public record — 6 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| TOKYO BAR DUPONT LLC | — | Jul 2026 | DC business licence | folio match · high |
| BILLIONSCALE FUND | — | Apr 2026 | DC business licence | folio match · high |
| MALARIA NO MORE FUND | 502 | Apr 2026 | DC business licence | folio match · high |
| FUND FOR GLOBAL HUMAN RIGHTS | 400 | Apr 2026 | DC business licence | folio match · high |
| SchoolTalk, Inc. | — | Apr 2025 | DC business licence | folio match · high |
| Tatte Bakery & Cafe | — | Nov 2024 | DC business licence | folio match · high |
Washington, DC assessment roll
Parcel record
| Field | Value |
|---|---|
| SSL | 01370825 |
| Site address | 1301 CONNECTICUT AVE NW |
| Land use (DOR) | 052 — Office (large) |
| Building area (actual) | — |
| Floors / units / buildings | — / — / — |
| Lot size | 7,512 sq ft |
| Year built | 2008 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $10,816,930 |
Recorded owner (assessment roll)
1301 CONNECTICUT AVENUE INC
1301 CONNECTICUT AVE., INC
Owner mailing address: 1575 I STREET NW SUITE 305, WASHINGTON, DC, 20005
2 Washington office properties share this owner mailing address →
Commercial property is usually held one building per entity; a shared mailbox is how the roll reveals a portfolio. It is evidence of common ownership, not proof.
Location
- Address
- 1301 CONNECTICUT AVE NW
- City
- Washington
- ZIP
- 20036
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
Does the owner of 1301 CONNECTICUT AVE NW hold other Washington office property?
2 Washington office properties (2 parcels, 288.8K sq ft) are recorded to 2 owner entities sharing this parcel's tax-bill mailing address. A shared mailing address is evidence of common ownership, not proof of it.
What has happened at 1301 CONNECTICUT AVE NW recently?
1 recorded transfer is on file for this parcel, the latest dated Oct 2020.
The building files energy-benchmarking disclosures — 1 report year are matched to this parcel.
What does “Office (large)” mean for this parcel?
The Washington, DC roll classifies SSL 01370825 as “Office (large)” (use code 052). BuildingCensus includes a parcel in its office census when the roll gives it an office-class use, so the label is the county's, not an inference.
Frequently asked questions
Who owns 1301 CONNECTICUT AVE NW?
The recorded owner on the Washington, DC assessment roll (current) is 1301 CONNECTICUT AVENUE INC, 1301 CONNECTICUT AVE., INC. Owner mailing address on file: 1575 I STREET NW SUITE 305, WASHINGTON, DC, 20005.
What companies have offices at 1301 CONNECTICUT AVE NW?
6 active business locations at this building appear in Washington, DC public records, including TOKYO BAR DUPONT LLC, BILLIONSCALE FUND, MALARIA NO MORE FUND, FUND FOR GLOBAL HUMAN RIGHTS, SchoolTalk, Inc.. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 1301 CONNECTICUT AVE NW?
The Washington, DC roll records a build year of 2008. It sits on a 7,512 sq ft lot.
What is the assessed value of 1301 CONNECTICUT AVE NW?
$10,816,930 on the Washington, DC roll. Assessed values are taxable-roll figures, not market prices.
When did 1301 CONNECTICUT AVE NW last sell?
The last recorded transfer was in Oct 2020 for $32,433,400.
What is the SSL for 1301 CONNECTICUT AVE NW?
SSL 01370825, site address 1301 CONNECTICUT AVE NW, Washington. It is the key to look the parcel up in the Integrated Tax System public extract (Washington, DC).
More around 1301 CONNECTICUT AVE NW
Everything here comes from public records, and public records go stale. If you know better, say so.
Data provenance — public records only
- Washington, DC — Integrated Tax System public extract (owner names, mailing addresses, assessments), CAMA commercial and daily sales tables, Basic Business Licenses (suite-level premises; the universal catch-all licence was repealed Oct 2025, thinning the roll thereafter), and DOEE energy benchmarking.
Every fact on this page is drawn from the government records above — no listing sites, no scraped platforms, no third-party images. Facts from public records are uncopyrightable; each tenancy row carries its source and match confidence. Records can lag reality — a business-tax receipt or registration at an address is evidence of occupancy, not a lease confirmation.
Working with Washington office parcels? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
Dataset updated . Source: Washington, DC assessment roll, SSL 01370825.
About this data
Source: Integrated Tax System public extract (Washington, DC), as published September 20, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “1301 CONNECTICUT AVE NW, Washington, DC (SSL 01370825)”, https://buildingcensus.com/offices/dc/office-building-977e2b22 (data as of September 20, 2026).